12770889 has 4 divisors (see below), whose sum is σ = 17027856. Its totient is φ = 8513924.

The previous prime is 12770881. The next prime is 12770897. The reversal of 12770889 is 98807721.

12770889 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (12770881) and next prime (12770897).

It is a cyclic number.

It is not a de Polignac number, because 12770889 - 2³ = 12770881 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12770889.

It is not an unprimeable number, because it can be changed into a prime (12770881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2128479 + ... + 2128484.

It is an arithmetic number, because the mean of its divisors is an integer number (4256964).

Almost surely, 2^12770889 is an apocalyptic number.

It is an amenable number.

12770889 is a deficient number, since it is larger than the sum of its proper divisors (4256967).

12770889 is an equidigital number, since it uses as much as digits as its factorization.

12770889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4256966.

The product of its (nonzero) digits is 56448, while the sum is 42.

The square root of 12770889 is about 3573.6380622553. The cubic root of 12770889 is about 233.7439488649.

The spelling of 12770889 in words is "twelve million, seven hundred seventy thousand, eight hundred eighty-nine".